Combination clock and radio



June 4, 1935. v H. R. VAN DEVENTER I COMBINATION CLOCK AND RAD]:ORECEIVER Filed April 7, 1952 6 Sheets-Sheet 1 INVENTOR M M M June 4, 1935. H. R.. VAN DEVENTER COMBINATION CLOCK AND RADICRECEIVER Filea April '7, 1952 6 Sheets-Sheet 2 nob N E V m June 4, 1935.

H. R. VAN DEVENTER COMBINATION CLOCK AND RADIORECEIVER' 6 Sheets-Sheet 3 Filed April .7, 1932 INVENTOR June 4, 1935. H. R. VAN DEVENTER COMBINATION CLOCK AND RADIOHECEIVER Filed April '7, 1932 6 Sheets-Sheet 4 IYNVVENTOR' June 4, 1935. H. R. VAN DEVENTER 2,003,405.

' COMBINATION CLOCK AND RADIORECEIVER Filea- April 7, 1932 e Sheets-Sheet 5 1 INVENTOR June 4, 1935. I H. R. VAN DEVENTER 2,003,405

COMBINATION CLOCK AND RADIORECEIVER Filed April 7 .1932 6 SfieetS Sheet 6 v a a g; i a P v; [I -|H| INVENTOR Patented June 4, 1935 COMBINATION CLOCK AND immo- V p RECEIVER I Harry R. Van .ljeventer, Newl'ork, N. Y., 85- signor to Patent Engineering Corporation, a.

corporation of Delaware ,3

Application April 1,1932, Serial No. 603,789

disclosed herein and specific details of a preferred embodiment thereof disclosed, it must be understood that such details are not intended to be limitative .of the invention except in so far This invention relates to improvements n a combination clock and radio receiver, and has forit's principal object the combination of aclock,

preferably one with an electric driving motor,

;5 and a radio receiving set including aloud speaker, all'assembled and mounted in'a single cabinet that is small and compact and that willhave the appearance of an ordinary mantel clock, the dimensionsof the cabinet being about 6 wide, 6" deep and I" high.

Another'object of the invention is to produce a combination device of the type 'describedin which the chassis canfies all of the of the radio receiving set including the loud speaker *to-' gether with the clock mechanism, the entireassembly being readilyremovable fromtihe cabinet without disassociating -or disassembling any of the parts.

Another object is to provide'a combination device of the classdescribed in which the tuning dial for the radio receiving set surrounds-the clock dialthus giving a tuning dial-of greater diameter than is possible if the tuning dial :is mounted below the dial of the clock in a set of the dimensions above given. 7

The invention consists substantially in theconstruction, combination, location and "relative arrangements of parts, all as will be more fully hereinafter set forth, as shown by the accom- 1 panying drawings and finally pointed outin the appended claims.

In the accompanying drawings: Figure l is a front elevation of a combination clock and radio set embodying the invention;

Figure 2 is a side elevation of the set, Figurel", Figure 3 is a rear view, partly in section, of the set shown in Figures 1 and 2;

Figure 4 is a side elevation, partly in section, of the set shown in Figures 1 and 2;

Figure'5 is a horizontal sectional view line 55 of Figure 3; a

Figure 6 is a rear view of the chassis of the-set, Figure 1, with parts removed in order to more clearly show a sub-assembly mounted thereon comprising the tuning condenser for the radio receiving set and its connections to the tuning dial and the associated electric clock mechanism;

and

Figure '7 is a typical circuit which maybe used on the with the combination clock and radio receiving.

and although the invention will be completely as :set forth inrthe accompanying claims.

For

be made of woodor other suitable material.

the front of this cabinet is anopening II for the clock and the dial knobs of the radio set as hereinafter described.

The .cabinet also has two openings I2 and 13 in the sides thereof .to permit .egress of sound from the loud speaker.

These openings may be covered by a cloth 14 to prevent the ingress of dirt and the cloth may be protectedby a grille IS.

The cabinet does not have any operating parts secured thereto, all of the operating parts here inafter described being mounted. upon a framework or chassis it which may be of aluminum or other suitable :material,

and of any desired construction. It may bemade from' a flat stamping formed to the desired shape.

The sides of the framework extend down'wardly and are bent outwardly to form the supporting in place in the cabinet these feet .may be :secured therein .by any .suitable catch members or :by screws. p

The framework. has a horizontally disposed cross bar 3 secured to the sides thereof in any suitable manner ,and two or more inwardly .projecting lugs lfli9. The'sub-assembly plate 20 is secured to the cross as shown in Figure 6.

bar and the lugs 19-19 An outer face of this plate may constitute the clockdial or the clock dial is secured thereto in any suitable manner.

The plate .20 also-carries a ring 2| which supports the usual bezel in which the usual crystal is mounted,'the ring, bezel and crystal serving to enclose the usual hour, minute and second hands denoted by the numerals 22, 23 and 24.

To the back of the plate 20 is secured the posts 2525 which support a bearing for theshaft 26 of the clock movement, said shaft extending rearwardly as shown in Figure l and terminating in the usual setting knob-121; whereby the clock hands can be set in the usual manner. The supports '28 are also secured to the plate 20 .and support the clock mechanism of anydesired: type,

generally denoted by the numeral :29.

sake of illustration, an

isshown,

For the electric clock movement L-shaped member 3a which extends inwardly towards the clock dial and has a notch 35 in its lower end which engages a' pin 36 riveted into the carrier plate or ring gear 31. A slot 38 is provided in the sub-assembly plate 26 so that the pin 36 may move therein and the arc" of travel of the ring gear 31 limited thereby- The ring gear 31. is provided on its outer edge with teeth and meshes with the gear 39 which is secured to a sleeve 40 to which is attached the knob 4|. By turning the knob the ring gear 31 Will revolve about the ring 2| which forms a support therefor and will carry withit the arcuate member 42 secured thereto. This member is made of celluloid or other translucent material bearing suitable indicia as commonly used on tuning dials in radio receivers.

An opening'43 is provided in the plate 25 and a lamp 44 is mounted immediately behind this opening so that the light from this lamp can shine through the opening and pass through the translucent member 42.

A front plate 45 has an opening 46 therein which exposes a portion of the arcuate translucent dial member 42.

In addition to the tuning condensers 3|, 32,

other parts of the radio receiver'may be mounted on the cross member 30; for example, the radio frequency transformers 41-41 of the preselector and other small parts hereinafter referred to in connection with Figure 1. A heavy base plate 48 is provided secured to the sides of the framework l6 and below this base plate is suitably and insulatedly mounted the piezo-electric crystal 49 which is provided with a pair of clamps 5050 which have outwardly extending portions l-5I that pass through suitable openings in the side walls of the framework l6 and engage the lower edges 52-52 of the diaphragm 53. The lower edges of the diaphragm may be provided with stiffening members in order to insure a good contact between the outer ends 5| of the clamps and'the diaphragm material, and the diaphragm 53 may be supported on postsv 54.54 at the top of the chassis framework as shown.

It will be seen from the foregoing that the diaphragm completely surrounds the side walls and topvof the chassis and it, together with its driving member (which in this embodiment of the invention is the piezo electric crystal) are mounted upon and carried by the chassis, and are removable from the cabinet [0 therewith. The theory and operation of apiezo electric crystal when used in connection with a loud speaker of this description is knownandwill not be herein described in detail but it is desirable that the base plate 48'be very'rigid in order that all of the'vibrations of. the crystal may be transmitted to the diaphragm and that none of the energy will be lost inthe base plate.

A circuit which may be used in a combination clock and radio set as herein described is shown in Figure '7 by way of illustration, but any suitable circuit may be employed. It will be understood that all of the parts and instrumentalities necessary in connection with this circuit are mounted upon the chassis and are removable from the cabinet I!) as a unit.

An antenna binding post 55 is insulatedly mounted upon the chassis for connection to the antenna, and the binding post 56 is mounted upon and electrically connected to the framework [6 to which the grounded side of all the apparatus shown in Figure 7 is connected.

The radio frequency transformers 4l41 are connected to the variable condensers 3!, 32 as shown, and the resultant pre-selector circuit is connected to the R. F. amplifier 51 which in .tube 62, the plate circuit of which is connected to the primary of the input push-pull transformer-63, the secondary of which is connected to the grids of the amplifier tubes 64, 65. The plates of. the amplifier tubes 64, 65 are connected to the primary of the output transformer 66, the secondary of which is connected to the piezo electric crystal 49. The by-pass condensers 6'! are connected from the ground to the plates of the respective amplifier tubes and a resistance 68 is provided in the plate circuit of the detector tube.

A filament voltage transformer 69 is provided having its primaryconnected to binding posts or to a suitable cord and plug whereby connection may be made to a suitable source of current.

The' clock motor 29, when an electric clock is used, is connected directly across the incoming current supply so that the clock will not stop when the switch If is operated. This switch H is preferably combined with a potentiometer l2 whichserves as a volume control, this potentiometer being connected to the shaft 13 having on its outer end a control knob 14. When the control knob 14 is turned all the way to the left, switch H is operated. When turned clockwise the switch is turned on by the first movement of the knob and from there on the resistance of the potentiometer is varied, thereby varying the volume of the set in the usual manner.

A rectifier tube' has its filament connected as shown to one winding of the transformer 69 in order to supply rectified current to the plate circuit, the same passing to the plates via the choke coil 16 and the resistances TI, 18 and 19 whereby various desired voltages are taken off to the tubes in a known manner. The return circuit for the plate supply current is lead via the plate of the rectifier tube. to one side of the incoming current supply, the other side of which is grounded through the condenser 80.

The filaments of. all of the tubes are energized from a winding of the transformer 69 as shown and across this same winding is connected the lamp 44 for illuminating the condenser dial. This lamp acts as a pilot light as it will only light when the switch H is on and the radio set is in use. A center tap resistance 8| is connected across the filament supply wires in the usual manner.

The various'parts as described are all mounted upon and within the chassis or framework 16; for the sake of clarity in connection with Figures 3, 4, 5 and 6 some of the smaller parts herein referred to have not been shown.

The "tubes are mounted as shown in Figure 3 and the insulating member 82 is provided with theusual socket terminals for the .pin terminals 83 of the tubesand some of the tubes are shielded by means of the metallic shields 84 which are suitably secured to the framework I6. These shields also encase the radio frequency transformers 58 and 60.

The particular type of tube shown in the circuit Figure 7 has an outside grid. It need not be described in detail for the operation of same will be evident to those skilled in the art from a study of Figure 7.

What is claimed is:

l. A radio receiver including a cabinet, a framework .having side walls supported in said cabinet, a diaphragm adapted to be vibrated by a driving member, said diaphragm surrounding the side walls of said framework, a driving member for vibrating said diaphragm mounted on said framework and radio means for causing said driving member to vibrate said diaphragm, said means including a variable condenser mounted on said framework above said driving member.

2. A radio receiver including a cabinet having a base, a framework, adapted to support parts of the radio receiver mounted in said cabinet above the base thereof, a diaphragm within said cabinet surrounding the walls of said framework and having an edge extending downwardly towards the base of said cabinet, means for vibrating said diaphragm mounted in the lower portion of said framework below the main vibratory portion of said diaphragm and radio means for actuating said last means mounted upon said framework.

3. In a radio receiver including a cabinet having a base, a framework supported in said cabinet above the base thereof, a diaphragm having an edge extending downwardly toward the base of said cabinet, said diaphragm being supported by said framework, means for vibrating said diaphragm secured to the downwardly extending edge thereof and supported on said framework, a rigid metallic plate supporting said last means secured to the bottom of said framework above the base of said cabinet, and radio means for operating said first means secured to said framework.

4. A radio receiver including a cabinet, a framework adapted to support parts of the radio receiver supported in said cabinet, a rigid plate secured to the bottom of said framework and forming the bottom closure thereof, a piezo electric crystal secured to saidplate, a diaphragm positioned above said plate secured to said crystal and adapted to be vibrated thereby, and means mounted upon and within said framework for receiving radio impulses and for actuating said piezo electric crystal to vibrate said diaphragm, said means including a variable condenser secured to said framework and removable from the cabinet therewith.

5. A radio receiver including a cabinet having openings in its sides, a framework removably supported in said cabinet, a plate closing the bottom of said framework, a piezo electric crystal secured to said plate, a diaphragm mounted on said framework secured to said crystal and adapted to be vibrated thereby, said diaphragm extending around the inner side walls of said cabinet and having'free vibratory portions adjacent the openings therein-,.and means for receiving radio impulses mounted'upon: and within said framework adapted to actuate said piezo electricicrystal,lsaid means including atvariable condenser mounted 'upon said framework and re movable from the cabinet therewith.

6'.'A radio receiver including a. cabinet, a framework removablyip'ositioned in said cabinet, a piezo electric crystal mounted on said framework, a diaphragm carried by said framework and covering practically all of the area of the side walls and top of said cabinet and positioned between the inner walls of the cabinet and the outer walls of said framework, means carried by said framework for radio reception and for actuating said crystal, said means including a tuning condenser and a volume control, said condenser and control means having shafts extending through a wall of said cabinet whereby said condenser and volume control may be manually operated.

7. A radio receiver including a cabinet having a front ,wall, a framework positioned in the cabinet having a sub-assembly plate adjacent the front wall of the cabinet, an electric clock mechanism mounted upon said plate, tuning condensers carried by said framework and mounted in the rear of said clock mechanism and having a shaft parallel to the shafts of said clock mechanism, a plurality of vacuum tubes mounted subj acent said condensers, a shaft mounted upon said subassembly plate and projecting outwardly from the front wall of said cabinet, a gear on said last shaft, a gear supported on said sub-assembly plate meshed with said first gear, means connected with said last gear and to the shaft of said condensers, radio means mounted upon said framework including a loud speaker mechanism and connections between said clock mechanism and said radio current supply means whereby said clock and said radio receiver may be operated from a common source of current.

8. A combination clock and radio receiver comprising a cabinet having openings in each side and the front thereof, a framework adapted to fit within said cabinet, an electric clock secured to the front of said framework and adapted to fit in the opening of said cabinet, a loudspeaker supported on said framework having its diaphragm adjacent the side openings in said cab-' inet, radio receiver parts mounted upon said framework and adapted to actuate said loud speaker, control means mounted upon said framework and extending through the front of said cabinet and adapted to control the volume of said loud speaker, and a circuit including a source of current connected to said chassis and adapted to furnish current to said radio receiver parts and said electric clock.

9. In a radio receiver, a chassis comprising a framework having a horizontally disposed cross member therein, a sub-assembly secured tosaid member and framework, said sub-assembly inplate for the chassis, loud speaker driving means mounted on said base plate, anda diaphragm connected to said driving meansand supported on said chassis.

11. A radio receiver comprising a cabinet having a removable chassis therein supporting parts of the radio set and a sub-assembly adapted to be mounted upon saidchassis and removable therefrom as a unit, said sub-assembly comprising a horizontal plate member adapted to be secured to the chassis, said plate supporting an electrically operated clock, a tuning condenser, and means for adjusting said tuning condenser including a dial visible from the front of the cabinet when the chassis is in said cabinet, said subassembly and the aforesaid parts mounted thereon being removable as a unit from the chassis.

HARRY R. VAN DEVENTER. 

